Graphene electric heating sheet for floor heating

Abstract

The utility model relates to the technical field of electric heating sheets, and discloses a graphene electric heating sheet for floor heating, which comprises a graphene heating layer formed by coating a substrate material with graphene slurry, and graphene powder in the graphene slurry is uniformly dispersed in the graphene heating layer; the electrode layers are arranged at the two ends of the graphene heating layer, and the electrode layers are connected with the graphene heating layer; the packaging layer wraps the graphene heating layer and the electrode layer, a partition plate is arranged in the packaging layer to separate the graphene heating layer and the electrode layer, and the packaging layer is connected at the edges of the graphene heating layer and the electrode layer in a sealed mode; one end of the outgoing line is connected with the electrode layer, and the other end of the outgoing line is connected with a connecting line of an external power supply; the connecting sheet is positioned on the electrode layer; and the bus bar is arranged on the graphene heating layer, the bus bar is electrically connected with the connecting sheet, and the surface of the bus bar is provided with an anti-oxidation coating. The radiator has the advantages of being compact in internal structure, high in electric energy utilization rate and efficient and uniform in heat dissipation.

Description

Technical Field

[0001] This utility model relates to the field of electric heating element technology, specifically to a graphene electric heating element for underfloor heating. Background Technology

[0002] Graphene-heated underfloor heating panels, as a new type of underfloor heating device, utilize the excellent electrical and thermal conductivity of graphene to achieve their heating function. When electricity is applied to graphene, the movement speed of electrons within it accelerates, generating significant heat energy and dissipating it evenly. Structurally, it mainly comprises a graphene heating layer, an insulation layer, and a waterproof layer. The heating layer, as a key component, possesses rapid and efficient heating capabilities; the insulation layer ensures safe use and effectively prevents electrical leakage; and the waterproof layer prevents moisture from damaging the heating system.

[0003] Current graphene-heated underfloor heating panels on the market face several pressing issues. Firstly, their heating uniformity is poor. Due to the multi-directional simultaneous heating mode of their encapsulation layer, it's difficult to ensure even heat distribution across the entire surface of the panel, leading to localized temperature differences that negatively impact the heating experience. Furthermore, a significant amount of heat is lost in unused areas, resulting in unnecessary energy waste. Secondly, the efficiency of converting electrical energy into heat is low, with a considerable amount of electrical energy failing to be effectively converted into usable heating energy, leading to substantial energy waste. Utility Model Content

[0004] To solve the above-mentioned problems, this utility model proposes a graphene electric heating element for underfloor heating that features a compact internal structure, high energy utilization, and efficient and uniform heat dissipation.

[0005] To solve the above-mentioned technical problems, the technical solution proposed by this utility model is: a graphene electric heating element for underfloor heating, comprising:

[0006] A graphene heating layer is made by coating a graphene slurry onto a substrate material, wherein graphene powder is uniformly dispersed in the graphene slurry, and the substrate material is a flexible and insulating material.

[0007] An electrode layer is disposed at both ends of the graphene heating layer and is connected to the graphene heating layer for connecting to an external power source.

[0008] An encapsulation layer that encapsulates the graphene heating layer and the electrode layer, wherein a partition is provided inside the encapsulation layer to separate the two, and the encapsulation layer is sealed at the edges of the graphene heating layer and the electrode layer.

[0009] The lead wire has one end connected to the electrode layer and the other end used to connect to the external power supply connection line.

[0010] The connecting piece is located on the electrode layer. The connecting piece is made of metal and has good conductivity and corrosion resistance. Its surface is polished to reduce contact resistance.

[0011] The busbar is set on the graphene heating layer and is electrically connected to the connecting piece. The busbar is made of a metal material with good conductivity and has an anti-oxidation coating on its surface.

[0012] Furthermore, the graphene powder in the graphene heating layer is nanoscale graphene sheet.

[0013] Furthermore, the substrate material is a polyethylene terephthalate film or a polyethylene naphthalate film.

[0014] Furthermore, the electrode layer is a metal mesh electrode, which is woven from metal wires made of silver or a silver alloy.

[0015] Furthermore, the encapsulation layer is made of polyurethane or epoxy resin, and the outer surface of the encapsulation layer has a waterproof coating, which is a fluorocarbon resin coating or an organosilicon coating.

[0016] Furthermore, it also includes an insulating layer disposed between the graphene heating layer and the encapsulation layer, and the insulating layer is made of inorganic insulating material.

[0017] Furthermore, the lead wire is a multi-strand stranded wire, and the lead wire is covered with an insulating protective sleeve, which is made of polyvinyl chloride or thermoplastic elastomer.

[0018] Furthermore, the partition is provided with multiple connecting grooves for passing through the busbar, and the edges of the connecting grooves are passivated.

[0019] Furthermore, the encapsulation layer is provided with a removable top cover made of the same material as the encapsulation layer.

[0020] Compared with existing technologies, the advantages of this invention are as follows: the components of the graphene heating element are rationally arranged, with the graphene heating layer and electrode layer encapsulated and effectively partitioned by partitions. The busbars and connecting pieces work together to achieve electrical connection, and the entire unit is integrated in an orderly manner within a limited space, reducing unnecessary space occupation and making the internal structure more compact. This facilitates flexible layout during underfloor heating installation and saves space.

[0021] The graphene heating layer is made by coating a slurry of uniformly dispersed graphene powder, and the nano-scale graphene sheets can efficiently conduct electricity and generate heat. The electrode layer uses metal mesh electrodes woven from silver or silver alloy, which have excellent conductivity and low resistance. Combined with a busbar with good conductivity and an anti-oxidation coating, it can reduce the loss of electrical energy during transmission, allowing more electrical energy to be converted into heat energy, thereby improving the efficiency of electrical energy utilization and achieving energy-saving and efficient heating.

[0022] The graphene heating layer itself has excellent thermal conductivity, enabling it to quickly transfer the generated heat outwards. Simultaneously, the encapsulation layer uses suitable materials to ensure stable heat dissipation from the inside, and the heating element makes good contact with the ground after installation, facilitating even heat diffusion across the entire floor. This results in efficient and uniform heat dissipation, enhancing the underfloor heating user experience. Attached Figure Description

[0023] Figure 1 This is a perspective view of the present invention;

[0024] Figure 2 This is a top view of the present invention;

[0025] Figure 3 This is a side view of the present invention;

[0026] Figure 4 This is a structural schematic diagram of the present invention excluding the top cover portion;

[0027] Figure 5 This is an enlarged view of Part A of this utility model.

[0028] As shown in the figure: 1. Graphene heating layer; 2. Electrode layer; 3. Encapsulation layer; 4. Lead wire; 5. Busbar; 6. Connecting piece; 7. Insulating layer; 8. Top cover; 9. Partition. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings.

[0030] Combined with appendix Figure 4 A graphene heating element for underfloor heating includes: a graphene heating layer 1, which is made by coating a substrate material with graphene slurry. Graphene powder in the graphene slurry is uniformly dispersed therein. The graphene powder in the heating layer 1 is nanoscale graphene flakes, which allows graphene to better exert its excellent electrical properties, improving heating efficiency and uniformity, and facilitating stable heating for underfloor heating. The substrate material is a flexible and insulating material, such as polyethylene terephthalate film or polyethylene naphthalate film, combining flexibility and insulation for easy installation and safe use, thus fitting the underfloor heating application scenario.

[0031] Combined with appendix Figure 4Appendix Figure 5 Electrode layer 2, located at both ends of graphene heating layer 1, is connected to the graphene heating layer 1 and used to connect to an external power source. Electrode layer 2 is a metal mesh electrode, woven from silver or a silver alloy wire, which has good conductivity, effectively reducing resistance and ensuring smooth current flow, thus guaranteeing stable heating of the graphene heating element. Connecting piece 6, located on electrode layer 2, is made of metal with good conductivity and corrosion resistance. Its surface is polished to reduce contact resistance.

[0032] Combined with appendix Figure 1 Appendix Figure 3 , attached Figure 4 Appendix Figure 5 The encapsulation layer 3 encloses the graphene heating layer 1 and the electrode layer 2. A partition 9 separates the two layers within the encapsulation layer 3, and the encapsulation layer 3 is sealed at the edges of the graphene heating layer 1 and the electrode layer 2. The encapsulation layer 3 is made of polyurethane or epoxy resin, and its outer surface has a waterproof coating, which is either a fluorocarbon resin coating or an organosilicon coating. This provides both good encapsulation and protection, effectively preventing water damage and extending the lifespan of the heating element, making it suitable for complex environments such as humid underfloor heating. A removable top cover 8, made of the same material as the encapsulation layer 3, is provided on top of the encapsulation layer 3, facilitating the inspection and maintenance of internal components. This allows for timely inspection and troubleshooting when needed, improving ease of use.

[0033] Combined with appendix Figure 4 It also includes an insulating layer 7, which is disposed between the graphene heating layer 1 and the encapsulation layer 3. The insulating layer 7 is made of inorganic insulating material and is used to further improve the insulation performance and stability of the heating element, improve the safety of use, and avoid potential hazards such as leakage.

[0034] Combined with appendix Figure 2 Appendix Figure 5 Lead wire 4, one end of which is connected to electrode layer 2, and the other end is used to connect to the connection line of external power supply. Lead wire 4 is a multi-strand stranded wire, and lead wire 4 is covered with an insulating protective sleeve. The insulating protective sleeve is made of polyvinyl chloride or thermoplastic elastomer. The multi-strand stranded wire is soft and easy to connect. The insulating protective sleeve can effectively prevent the risk of electric shock and ensure the safe and reliable use of the connection line.

[0035] Combined with appendix Figure 4 Appendix Figure 5Busbar 5 is disposed on the graphene heating layer 1 and is electrically connected to the connecting piece 6. Busbar 5 is made of a metal material with good electrical conductivity and has an anti-oxidation coating on its surface. The partition plate 9 is provided with multiple connecting grooves for the busbar 5 to pass through. The edges of the connecting grooves are passivated to facilitate the passage of the busbar 5 while avoiding scratches on the busbar 5, ensuring the normal operation of the busbar 5 and maintaining the stable circuit connection of the heating element.

[0036] The specific implementation method of this utility model is as follows: First, before laying the underfloor heating, ensure that all components of the graphene heating element are intact, especially checking whether the connection between the electrode layer 2 and the graphene heating layer 1 is secure, and whether the lead wire 4 is damaged. Next, place multiple graphene heating elements neatly on the floor substrate according to the underfloor heating installation plan, maintaining appropriate spacing between them to ensure that the heat can evenly cover the entire area. Then, connect the lead wire 4 of each heating element to the external power supply line, ensuring a secure connection to avoid loose connections that could affect power supply. After connection, turn on the external power switch. The current will be transmitted to the electrode layer 2 through the lead wire 4, and the electrode layer 2 will then evenly guide the current into the graphene heating layer 1, causing the graphene powder in the graphene heating layer 1 to heat up rapidly under the action of the current. The generated heat will dissipate outward through the encapsulation layer 3. Due to the good thermal conductivity of the encapsulation layer 3, the heat can be efficiently and evenly transferred to the indoor floor, realizing the underfloor heating function. During use, the top cover 8 on the encapsulation layer 3 can be opened periodically to check its internal condition and ensure that the heating element continues to work stably.

[0037] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly, for example, it can be a fixed connection, a detachable connection, or an integral connection; for those skilled in the art, the specific meaning of the above term in this utility model can be understood according to the specific circumstances.

[0038] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A graphene electric heating sheet for floor heating, characterized by, include: The graphene heating layer (1) is made by coating a graphene slurry onto a substrate material, wherein the graphene powder in the graphene slurry is uniformly dispersed therein, and the substrate material is a material with flexibility and insulation. Electrode layer (2) is disposed at both ends of graphene heating layer (1). Electrode layer (2) is connected to graphene heating layer (1) and is used to connect to external power source. The encapsulation layer (3) encapsulates the graphene heating layer (1) and the electrode layer (2). The encapsulation layer (3) has a partition (9) inside to separate the two, and the encapsulation layer (3) is sealed at the edge of the graphene heating layer (1) and the electrode layer (2). Lead wire (4), one end of which is connected to electrode layer (2), and the other end is used to connect to the connection line of external power supply; The connecting piece (6) is located on the electrode layer (2). The material of the connecting piece (6) is metal and has good conductivity and corrosion resistance. Its surface is polished to reduce contact resistance. Busbar (5) is disposed on graphene heating layer (1). Busbar (5) is electrically connected to connecting piece (6). The material of busbar (5) is a metal material with good conductivity and has an anti-oxidation coating on its surface.

2. The graphene electric heating sheet for floor heating according to claim 1, characterized in that: The graphene powder in the graphene heating layer (1) is nanoscale graphene sheet.

3. The graphene electric heating sheet for floor heating according to claim 1, characterized in that: The substrate material is a polyethylene terephthalate film or a polyethylene naphthalate film.

4. The graphene electric heating sheet for floor heating according to claim 1, characterized in that: The electrode layer (2) is a metal mesh electrode, which is made of woven metal wires, and the metal wires are made of silver or silver alloy.

5. The graphene electric heating sheet for floor heating according to claim 1, characterized in that: The encapsulation layer (3) is made of polyurethane or epoxy resin, and the outer surface of the encapsulation layer (3) has a waterproof coating, which is a fluorocarbon resin coating or an organosilicon coating.

6. The graphene electric heating sheet for floor heating according to claim 1, characterized in that: It also includes an insulating layer (7) disposed between the graphene heating layer (1) and the encapsulation layer (3), and the insulating layer (7) is made of inorganic insulating material.

7. The graphene electric heating sheet for floor heating according to claim 1, characterized in that: The lead wire (4) is a multi-strand stranded wire, and the lead wire (4) is covered with an insulating protective sleeve. The insulating protective sleeve is made of polyvinyl chloride or thermoplastic elastomer.

8. The graphene electric heating sheet for floor heating according to claim 1, characterized in that: The partition (9) is provided with multiple connecting grooves for passing through the busbar (5), and the edges of the connecting grooves are passivated.

9. The graphene electric heating sheet for floor heating according to claim 1, characterized in that: The encapsulation layer (3) is provided with a removable top cover (8) made of the same material as the encapsulation layer (3).

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